ipv6 topology (IS-IS view)

Function

The ipv6 topology command associates an IPv6 topology instance with an IS-IS instance and displays the IPv6 IS-IS topology instance view.

The undo ipv6 topology command dissociates an IPv6 topology instance from an IS-IS instance.

By default, no IS-IS instance is associated with any IPv6 topology instance.

Format

ipv6 topology topology-name [ topology-id { topology-id | multicast } ]

undo ipv6 topology topology-name

Parameters

Parameter	Description	Value
topology-name	Specifies the name of a topology instance.	The value is a string of 1 to 31 case-sensitive characters without spaces. When double quotation marks are used around the string, spaces are allowed in the string.
topology-id topology-id	Specifies the ID of a topology instance.	The value is an integer ranging from 6 to 4095. The IDs from 0 to 5 are reserved for specific topologies.
multicast	Associates an IS-IS instance with an IPv6 multicast topology.	-

Parameter

Description

Value

topology-name

Specifies the name of a topology instance.

The value is a string of 1 to 31 case-sensitive characters without spaces. When double quotation marks are used around the string, spaces are allowed in the string.

topology-id topology-id

Specifies the ID of a topology instance.

The value is an integer ranging from 6 to 4095. The IDs from 0 to 5 are reserved for specific topologies.

multicast

Associates an IS-IS instance with an IPv6 multicast topology.

Views

IS-IS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

IS-IS multi-topology enables multiple independent logical topologies to be deployed in an IS-IS AS. The ipv6 topology command can be used to associate an IPv6 topology instance with an IS-IS instance.

When using the ipv6 topology command to associate an IPv6 topology instance with an IS-IS instance, you need to specify topology-name and topology-id and ensure that the specified topology name and topology ID are unique.

To enter the view of an existing topology, you need to specify only topology-name.

Prerequisites

An IPv6 topology instance and an IS-IS instance have been created.

Follow-up Procedure

Run the isis ipv6 topology command in the view of a specified interface to associate the interface with an IS-IS topology instance.

Precautions

The topology IDs from 0 to 5 are reserved for specific topologies and cannot be used by other topologies. These topology IDs are described as follows:

0: is reserved for an IPv4 base topology. The name of the IPv4 base topology is base and cannot be used by other topologies.

1: is reserved for IPv4 inband management.

2: is reserved for an IPv6 base topology that is enabled using the ipv6 enable command.

3: is reserved for the IPv4 multicast topology named multicast. The mt-id value must be multicast. The topology multicast topology-id multicast command is used to enable the topology.

4: is reserved for the IPv6 multicast topology named multicast. The mt-id value must be multicast. The ipv6 topology multicast topology-id multicast command is used to enable the topology.

5: is reserved for IPv6 inband management.

Example

# Associate IS-IS instance 1 with the IPv6 topology instance with the name of blue and topology ID of 11.

<HUAWEI> system-view
[~HUAWEI] isis 1
[*HUAWEI-isis-1] ipv6 topology blue topology-id 11